Fuse cut-out



Aug. 28, 192s. 1,682,365

J. B. BOURGEOIS FUSE CUT-OUT Filed May 6, 1926 Patented Aug. 28, 1928.

JOHN B. BOURGEOIS, OF WORCESTER, MASSACHUSETTS.

FUSE CUT-OUT.

Application filed May 6,

This invention relates to a cut-out for fuses. The principal objects of the invention are to provide for safeguarding household electric apparatus; to provide means whereby fuses carrying a high current cannot be inserted in circuits in such a way as to conduct the electricity, thus necessitating the usesof the properfuses; to provide means whereby the common practice of insertmg pennies in the sockets so as to conduct the current without any live fuse will be imposslble; to provide means whereby the insertion .of any piece of metal Wlll be impossible 1f the fuse is mounted on a vertical wall; and to improve the construction of the block in which the fuse socket is mounted. 1

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the drawings in which v Fig. 1 is a central sectional View through a porcelain base having a fuse socket'therein constructed in'accordance with this invention; and y Fig. 2 is a side view of the fuse block to accompanying 'go with it;

The socket is made in the usual way except for one particular. It is mounted on a single piece of porcelain 10 which is secured in position in any usual way. On this porcelain base there 1s a conductor 11 at one side and a conductor 12 at the other. These are held down by binding screws 13 and connected with the circuit in the usual way. The porcelain base is provided with a protecting flange 14 as usual in which is located the brass or other metallic conducting socket 15. At the center of this, the porcelain base is rigidly mounted to provide a projection 16 integral with it having a conical hole or depression 17 which is provided at the bottom with ametallic head 18 connected with or constituting a part of one of the conductors 11 The other conductor 12 is connected with the metallic socket 15.

' The fuse plug 20 isprovided with the usual.

brass or other metallic screwthread 21 connected with one wire of the circuit and with a central projecting metallic tip 22 at the other. The rest of this plug is of porcelain, hard rubber, or any insulating material. This tip 22 is conical in shape and arranged to fit in the conical depression 17.

When the plug is put into the socket, the projection 22 enters the depression or hole 17 and contacts with the head 18 which is part 1926. Serial No. 107,254-

of the conductor 11, the screw '21 of course making'connection all the time with the con ductor 12.

- It will be understood that only fuses of 15 amperes capacity or smaller will be made with the addition of this tip or projection 22. All fuses of the larger capacity will be made fiat on the bottom as is now the case. It is proposed also that fuses of greater capacity than 15 amperes be made with the flat conductor at the end connected with a conductor inside by the use of solder, so that if anyone tries to add a tip to this contact by applying a hot iron he will melt the solder and render the fuse useless. e

With this invention ordinary fuse plugs cannot make any contact because they cannot be set down below the top of the projection 16. The use of a penny put across the contact will not result in the conducting of any current for the same reason. The contact cannot be reached by the fingers and if small pieces of nails or other'metal are put into the conical hole 17, when the base 10 is mounted on a: vertical wall, they will fall out of the recess and cannot be used to conduct the current. In this way the ordinary householder'cannot put in a fuse that is of such large capacity that some of his electric apparatus is likely to be blown out and he cannot resort to any of the usual subterfuges which are'commonly adopted in'case there is no fuse at hand.

Although I have illustrated and described only a single form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art metallic projection extending beyond its end. with an insulating base having a conducting socket for receiving the plug and having. an insulating wall extending across the bottom of the socket and provided with an integral projection extending into the socket and hav ing a perforation therethrough for said projection, and a onductor supported in said base and having a metallic head thereonextending part way up into said perforation,

for the purposes described.

In testimony whereof I have hereunto affixed my signature.

' JOHN B. BOURGEOIS.

The combination with a fuse plug having a I 

